| Karlovo to Ukiah (California) | 6,441.04 mi (10,365.85 km) |
| Karlovo to Union (Missouri) | 5,540.52 mi (8,916.61 km) |
| Karlovo to Union City (California) | 6,513.27 mi (10,482.09 km) |
| Karlovo to Union City (Georgia) | 5,535.66 mi (8,908.78 km) |
| Karlovo to Union City (New Jersey) | 4,774.29 mi (7,683.48 km) |
| Karlovo to Union City (Tennessee) | 5,570.64 mi (8,965.07 km) |
| Karlovo to Union Hill-Novelty Hill (Washington) | 5,876.32 mi (9,457.03 km) |
| Karlovo to Union Park (Florida) | 5,640.78 mi (9,077.96 km) |
| Karlovo to Uniondale (New York) | 4,758.61 mi (7,658.24 km) |
| Karlovo to Universal City (Texas) | 6,279.60 mi (10,106.04 km) |
| Karlovo to University (Florida) | 5,716.34 mi (9,199.56 km) |
| Karlovo to University City (Missouri) | 5,504.91 mi (8,859.29 km) |
| Karlovo to University Heights (Ohio) | 5,037.85 mi (8,107.64 km) |
| Karlovo to University of California-Santa Barbara (California) | 6,663.34 mi (10,723.62 km) |
| Karlovo to University Park (Texas) | 6,045.47 mi (9,729.24 km) |
